Re: [ovirt-users] Max amount of datacenters per ovirt engine
@awels: to add another layer of indirection via a dedicated
hosted-engine per outlet seems a little much. we are talking about 500 *
4GB RAM at least in this example, so 2 TB RAM just for management
purposes, if you follow engine hardware recommendations?
I would not go that far. Creating zones per continent (for example)
might be enough.
At least RHEV states in the documentation you support up to 200
hosts
per cluster alone.
The default configuration seems to only allow 250 hosts per datacenter.
# engine-config -g MaxNumberOfHostsInStoragePool
MaxNumberOfHostsInStoragePool: 250 version: general
--
Martin Sivak
SLA / oVirt
On Tue, Apr 26, 2016 at 4:03 PM, Sven Kieske <svenkieske(a)gmail.com> wrote:
> On 26.04.2016 14:46, Martin Sivak wrote:
>> I think that 1000 hosts per engine is a bit over what we recommend
>> (and support). The fact that all of them are going to be remote might
>> not be ideal either. The engine assumes the network connection to all
>> hosts is almost flawless and the necessary routing and distance to
>> your hosts might not play nice with (for example) the fencing logic.
>
> Hi,
>
> this seems a little surprising.
>
At least RHEV states in the documentation you support up to 200
hosts
per cluster alone.
>
> There are no documented maxima for clusters or datacenters though.
>
@awels: to add another layer of indirection via a dedicated
hosted-engine per outlet seems a little much. we are talking about 500 *
4GB RAM at least in this example, so 2 TB RAM just for management
purposes, if you follow engine hardware recommendations?
>
> But I agree, ovirt does not handle unstable or remote connections that
> well, so you might be better of with hundredths of remote engines, but
> it seems to be a nightmare to manage, even if you automate everything.
>
> My personal experience is, that ovirt does scale at least until about
> 30-50 DCs managed by a single engine, but that setup was also on a LAN
> (but I would say it could scale well beyond these numbers, at least on a
> LAN).
>
> HTH
>
> Sven
>
>
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